Fountain-pen



N. PANoFF.

FOUNTAIN PEN. v APPLICATIONFILED DEC.7. |920.

Patented Dec. 13, 1921.

- nwe/won NB Fam/arf Hmm/frs UNITED STATES NICHOLAS B. PANOFF, OEBROOKLYN, NEW YORK.

FOUNTAIN-PEN.

Specification of Letters Patent.

Patented Dec. 13, 1921.

Application filed. December 7, 1820. Serial No. 428,940.

To all 'whom it may concern.'

Be it known that I, NICHon-is B. PANOFF, a citizen of Russia, and aresident of the city of New York, borough of Brooklyn, in the county ofKings and State of New York, have invented a new and ImprovedFountain-Pen, of which the following is a full, clear, and exactdescription.

The present invention relates to new and useful improvements in fountainpens and it pertains more particularly to that type of fountain pens inwhich a flexible ink reservoir is employed.

It is one of the objects of the presen-t invention to so construct afountain pen that when the pen is in closed position, the ink reservoiris contracted at its discharge end to prevent feeding of the ink fromthe reservoir regardless of the position occupied by the pen.

It is a further object of the invention to provide means whereby whenthe contracted condition of the reservoir is relieved, the reservoir maybe again compressed at its opposite end to insure the proper feeding ofthe ink from the reservoir to the pen nib.

It is a further object of the invention to so construct the pen thatwhen the cap is removed from the rear end thereof, the ink remainingupon the nib will be drawn into the reservoir.

It is a still further object of the invention to construct a mechanismfor carrying out the above operations, which mechanism is operated bythe closing cap of the fountain en. p Vith the above and other objectsin view, reference is had to the accompanying drawings, in which- Figure1 is a longitudinal sectional view partly broken away, of a penconstructed in accordance with the present invention and showing theclosing cap in closing position' Fig. 2 is a similar view showing theclosing cap on the rear end of the pen or in that position which itoccupies during the writing operation;

Fig. 3 is a transverse sectional view taken on the line 3 3 of Fig. 1;

Fig. 4 is a longitudinal sectional view taken on the line 4- 4 of Fig. 1and at right angles to Figs. 1 and 2;

Fig. 5 is a perspective view of a modifiedl form of the invention.

Referring more particularly to the drawings, the reference character 10designates the barrel of the pen, and 11 designates the closing cap.

Mounted within the barrel 10 is an ink reservoir 12 and said inkreservoir is formed from any suitable material such as rubber or thelike. The reservoir 12 is connected to tn e neck 13 of the pen by havingits neck 14 slipped .over a reduced portion of the neck 13 wliih lieswithin the barrel 10, said neck 13 having an ink passage 14 which inturn leads to the nib 15 of the pen.

Mounted within the barrel 10 near its forwardend and secured theretoagainst reciprocating movement, is a collar 16, and said collar 16 has aplurality of forwardly extending resilient fingers 17, the forward endof each of which is curved inwardly as at 13. Slidably mounted on theexterior of the barrel 10, is a ring 19, and said ring carries a pin 2Oadapted for reciprocating movement in a slot 21 formed in the barrel 10.Mounted within the barrel 10 and surrounding the resilient fingers 17,is a smaller ring 25, so shaped as to provide an inclined surface 26adapted to ride upon the resilient fingers 17 heretofore mentioned. -Thering 25 is provided with a rearwardly projecting tongue 24, by means ofwhich it is secured to the ring 19 through the medium of the pin 20. Bythis mechanism it is apparent that as the ring 19 is reciprocatedrearwardly of the barrel, the inclined surface 26 of the ring 25 willcause a projection of the resilient lingers 17, andthe projections 18thereof will be caused to close about the ink reservoir 12, as shown inFig. l.

Mounted against reciprocating movement within the rear end of thebarrel, is a ring 30, and said ring 30 has a plurality of rearwardlyextending spring lingers 31, which fingers are adapted to inclose therear end of the ink reservoir 12. Mounted in suoli a manner as to engagethe rearwardly extending fingers 31, is a ring 32, and said ring is soshaped as to form an inclined surface 33 adapted to engage thehereinbefore mentioned resilient lingers 31. Projecting forwardly fromthe ring 32, are tongues 34, and each of said tongues 34 carries a pin37 lying Within a slot 35 in the barrel 10. The reference character 36designates av ring surrounding the barrel 10 and connected to the pins37. By this construction it is apparent that as the ring 36 isreciprocated upon the barrel 10, the ring 32 will be reciprocatedlongitudinally of the resilient fingers 31 to compress the rearend ofthe ink reservoir.

In the form of' the invention shown in Fig. 5, the pen is constructed insuch a. manner that the two rings 25 and 82 are movable in unison and toobtain this result, the rings 19 and 36 are dispensed with and asuitable sleeve 40 is reciprocatively mounted on the exterior of thebarrel 10. This sleeve 40 is connected to the forward ring 25 by meansof a rivet 41, and to the rear ring 32 by means of a. rivet 42. Asindicated by the reference characters 43 and 44, which indicate frontand rear slots, respectively, the sleeve 40 is permitted to reciprocateupon the barrel 10, it being understood that the rivets or pins 4l and42 have free movement in their respective slots 43 and 44. The deviceoperates in the following manner, assuming that the pen isv in operativecondition as shown in Fig. 2 and it is desired to close the same: Thecap l1 is removed and placed upon the forward end of the pen barrel 10.As the cap 11 is positioned to close the forward end of' the barrel 10,the end of the cap which receives the barrel will reciprocate the ring19 and will force the same rearwardly of the barrel 10 and will cause acontraction of the resilient fingers 17 through the medium of the ring25. This operation causes the fingers l'to choke the discharge end ofthe reservoir 12 and prevent the passage of ink therefrom.Simultaneously with this opera-tionV suction will be created at the rearof the ink reservoir to draw the ink from the nib to the reservoir. A,When it is desired to use the penY for writing, the cap 11 is removedfrom the forward voir through the ink passage 14 in the neck 14 of thepen. Y Y

In the modified form of the invention, Ythe action of the cap 11 is thesaine as in the preferred form except that in the modified form thecapcll engages the opposite ends of the sleeve 40, thus causing thecontracting rings 25 and 32 to operate in unison.

While in the present instance theA closing cap 11 has been shown asinternally screwthreaded, as at 50, which screw threads Vare radaptedfor engagement with the threads 51 on the barrel to' maintain the cap inclosed position relative to the pen, it is obvious that these screwthreads may be dispensed with and the cap retained in place upon the penin frictional engagement therewith if Vdesired, or the barrel 10 may beprovided with external screw threads to receive the internal screwthreads of the cap.V 1

I claim:

In a fountain pen, a reservoir, means for contracting the discharge endofV said reser- `voir to prevent a flowk of fluid therefrom, and

means for contracting the rear end of said reservoir to promote the flowof fluid therefrom, both of said means being operated by the closing capof the pen.

NICHOLAS B. l PANorr.

